Electrical warp stop-motion for looms.



Patented lune l9, I900.

H.-l. HARRIMAN. ELECTRICAL WARP STOP MOTIONFOR LOOMS.

(Application filed June 14, 1899.)

2 Sheets-Sheet I.

(No Model.)

WITNEESEIE No. 652,223. Patented June l9, I900. H. HARRIMAN'. ELECTRICALWARP STOP MOTIONFOR LOOMS.

(Application filed June 14, 1899.)

2 sheets-sheet 2.

(No Model.)

I VE TBR k325i FEEL l 212'- WITNESSES Q ,4 f {M 6? broken electricalcircuit.

UNITED STATES I PATENT @FFICE.

HENRY]. HARRIMAN, or NEW YORK, N. Y.

ELECTRICAL WARP STOP-MOTION FOR LQOMS.

SPECIFICATION forming part of Letters Patent No. 652,223, dated June 19,1900.

Application filed June 14, 1899. Serial No. 720,477. (No model- To (allwhom, it may concern:

Be it known that I, HENRY I. HARRIMAN, a citizen of the United States,residing at New York, in the county of New York and State of New York,haveinvented certain new and useful Improvements in'Electrical WarpStop- Motions for Looms, of which the following is a specification,reference being had therein to the accompanying drawings.

In the reduction of, the invention to practice I utilize detectors inthe form of flat strips of sheet metal having slots or eyes for thepassage of the warp-threads with which the detectors respectivelycooperate. These detectors are sustained in working position in the loomwith the aid of guide rods or strips, which latteralso constituteterminals of one polarity pertaining to a normally- Below the detectorsare employed plates constituting the terminals of opposite polarityofthe said normally-broken circuit. These plates are disposed obliquelywith relation to the-length of the detectors in order that when breakageor excessive s-lackness of a warp-threadpermits the correspondingdetector to descend the contact of the lower end of the descendingdetector with the surface of the corresponding oblique or inclined platemay resultin a deflection of the said detectoredgewise, thereby securingfirmer and more certain lateral bearing of the detector against therespective terminals. An electromagnet is arranged to be excited by theclosing of the aforesaid electrical circuit and also is arranged tooperate a movable controller for a disengager. When the saidelectromagnet is excited, the said controller is moved intoa positionwhich places the disengager in position to be operated by a going partof the loom. A latch retains the controller in this position. Then nextthe said going part of the loom advances, it operates the saiddisengager to effect the release of the shipper-handle, and therebybrings,

about thestoppage of the loom. The unshipping action causes the latch toassume an inoperative position and release the'controller, enabling thelatter and the disengager to return to their normal inoperativepositions. When, however, the shipper-handle is re stored to workingposition, the latch is rendered capable of acting again. The unshippingaction also operates a switch to open the circuit, while when theshipper-handle is restored to working position the said switch isoperated to close the circuit again.

In order to avoid certain disadvantages which are incident to the use ofan ordinary electromagnet, I prefer to utilize a solenoid for actuatingthe controller.

In order to lessen the intensity of the sparking at the places ofcontact of the detectors with the terminals, I prefer to operate thecircuit in which the detectors and terminals are placed with a currentof lowelectromotive force and to include also in the said circuit arelay-magnet. I place in therelay-circuit the electromagnet whichoperates the controller, the said relay-circuit being operated with acurrent of any required increased electromotive force suitable forsecuring the desired action of the parts. I

In the accompanying drawings I have illustrated the invention in thebest form in which it has yet been embodied.

In the drawings, Figure 1 shows in side elevation part of an ordinaryloom and also represents certain features of the invention appliedthereto. Only such portions of the loom are indicated as will assist inmaking disclosure of the manner of reducing the invention to practice.Fig. 2 is a view showing in front elevation-that is, looking from theleft-hand side in Fig. 1certain of the parts which are illustrated inthe latter. Fig. 3 is a sectional View on a somewhat-enlarged scale,showing two detectors, the terminals and their supports and wiring, anda warprest. Fig. 4 is a plan view of the parts which are shown in Fig. 3on the same scale asFigs. l and 2. Fig. 5 is a view in horizontalsection on the plane indicated by, the dotted line 5 5 in Fig. 2 on theenlarged scale. TFig. 6 is a plan view of the switch on the enlargedscale. Fig. 7 is a front view of the switch on said scale. Fig. 8 is adiagram of the essential working parts and the electrical connections.Fig. 9 is a view showing one of the tubular guide-rods.

The frame of the loom is designated a, the crank-shaft a, the cam-shafta the warpbeama the whip-roll a, the lease-rods a the harness-frames a,a, the shipper-handle a the usual shipper-handle-actuating spring a andthe notched shipper-handle holdingplate (1 Warp-threads are indicated atb b.

The warp-detectors are shown at c 0. They are formed in any suitablemanner for connection with the warp-threads to enable them to be hungupon the latter. In the form shown they have warp-thread-receiving slotsor eyes 0 c. They also are formed with elongated slots 0 c to enablethem to be threaded upon a guide-rod.

The warp-detectors may in practice be arranged in any required number ofranks or lines extending crosswise of the loom. They may all be placedin one rank or line or in two ranks or lines, as shown. The guide-rods,

upon which the warp-detectors c c of the said two ranks or lines arethreaded or strung in the manner represented in Figs. 3, 4, and 8, aredesignated at cl. These guide-rods d (I act not only to hold thewarp-detectors from movement in the direction of the length of thewarp-threads and to guide them in their vertical movements, but also toprevent the warp-detectors from dropping too far in the loom in case ofbreakage or excessive slackness of the warp-threads. The said guide rods61 d are arranged above the warp-threads.

The said lower ends of the warp-detectors pass down between otherguide-rods d cl. A third guide-rod similar to those designated 01, maybe interposed between the two ranks of warp-detectors, at the lower endsthereof, if

desired; but I usually interpose a divisionstrip, as at (Ii-Figs. 3, 4:,and 8.

Below the lower ends of the warp-detectors c c I locate narrow plates (Zd", extending crosswise of the loom. The said plates are placed inposition to be struck by the said ends when the warp-detectors descendin consequence of breakage or excessive slackness of their warp-threads.The said plates are at opposite sides of the division-strip C1 Theplates (1 d constitute the terminals of one polarity of anormally-broken electric circuit, the wires connecting with the saidplates being designated d cl and being united in one branch, as d, ofthe circuit. The terminals of opposite polarity of the said electriccircuit are constituted by one or both pairs -of the guide rods orstrips ddand d d. The

wires connecting with these are designated d (1 &c., and are united inthe branch (Z of. the circuit.

The plates (Z d are placed in oblique or inclined positions withreference to the length of the warp-detectors in order that as awarpdetector descends and strikes against the su rface of thecorresponding plate the engaging end of the same may be deflectedoutward, so as to slightly cant the warp-detector edgewise. Thereby afirmer and more certain lateral bearing of the edges of the warpdetector against the respective terminals with which it makes contact issecured. There is also a slight tendency on the part of the droppedwarp-detector to become wedged in place between the opposite terminals,whereby in a measure the tendency of the said warp-detector to break andagain make connection with the said terminals in consequence of the jarand vibration due to the continued working of the loom, withaccompanying sparking, is obviated. Thisimproves the operation of thestop-motion devices, rendering the same more efiicient by securingprompter and more certain action of the electromagnet that controls themechanical devices by which the unshipping of the loom is effected. Incases where the electrical current is continually broken, as inconsequence of frequently-interrupted contact due to jar and vibrationof a loom, it is difiicult or impossible to secure in the saidelectromagnet a magnetic field of sufficient strength to perform theallotted work. The lower end of each warp-detector preferably is madesomewhat pointed in order to facilitate the movement of such end uponthe surface of the oblique or inclined plate (Z with which it coacts.

The preferred arrangement of the oblique or inclined plates d d is asshown in the drawings-that is to say, the upper edges thereof arepresented toward each other, the plates diverging from each otherdownwardly.

The plates d d rest against the opposite diverging sides of aninterposed backing and support, which may be constituted of the loweredge portion of division-strip (1 or a separate strip may be providedfor the purpose.

With the described arrangement of the terminals there is verylittleopportunityor tendency for lint to lodge or accumulate where it willinterfere with perfect contact between the respective warp-detectors andthe respective terminals. This is particularly true of the plates d (1The various terminals are insulated properly both with reference tothose of opposite polarity and with reference to the loom=fra1ne. Hereinthe ends thereof are supported by blocks or plates, as d d, of what isknown commercially as fiber, it being a chemically-treated form of paperand being in general use in many connections in which itselectrically-insulating properties are useful. The division-strip d withthe flaring portion at the lower edge thereof, is com posed of suchmaterial or of wood and also is supported from the said blocks orplates. The blocks or plates d d in the present instance are applied tothe opposite sides of stands (1 which are bolted to uprights (1 securedto loom-frame a.

The warp-detectors may be applied to the warp-threads at any suitableplace in the loom. tween the lease-rods and the harness.

For the purpose of preventing the movements of the warp-threads'at thetime of the shed formations from affecting to too great an extent theposition of the warp-detectors when the latter are located between theleaserods and the harness I provide a warp-rest in front of thewarp-detectors and between the IIO Herein they are applied thereto begof the warp-detectors.

same and the harness. The warp-threads bear upon the top of thiswarp-rest, and consequently the depression of the warp-threads going tothe bottom planes of the respective sheds has no efiect in changing thepositions The said warp-rest, however, is at an intermediate height, sothat as each harness-frame rises the threads controlled thereby raisethe corresponding warpdetectors slightly above the common height of thewarp-detectors, thereby preventing the accumulation of suflicientlintand fluff among the warp-detectors to interfere with the free descent ofthe warp-detectors when breakage of warp-threads occurs. The warp-restconsists of a rod or roll, as e, seated in supports or bearings, as 6,attached to the stands (1 The solenoid which is employed for the purposeof operating the controller is designated f. (See Figs. 2 and S.) It ismounted on a fixed support, which in practice may be attached to theloom-frame. Herein for convenience of illustration the solenoid is shownin Fig. 2 standing on the same floor with the loom.-

The controller is designated g. The said controller is movably mounted.Herein it is represented as pivoted at g to a fixed support that isconstituted by a bracket on the loom -frame a. It also is represented asweighted, as at 9 to cause it to gravitate normally into its inoperativeposition. (Rep resented in Fig. 2.) The corcf of the solenoid isconnected with the said controller gas, for instance, by a rod or wire fjoined to the said core and to an arm 9 of the controller. The passageof an electric current through the solenoid f causes the core f to bedrawn down, and thereby swings the controller g from its outerinoperative position (represented in Fig. 2) into its inner or operativeposition.

The use of a solenoid enables me to secure the desired extent ofmovement of the controller without the loss in efficiency thatordinarily is due to the use of levers to increase the extent of themotion that is derived from the armature of an ordinary electromagnet.It also enables a more convenient construction and arrangement of theparts to be secured. Less delicacy of adjustment is neces sary than inthe case of an ordinary electromagnet. In the latter case, as is wellknown, the armature must never be permitted to pass more than a veryshort distance away from the poles of the magnet, while with a solenoidthe core may have a very considerable range of movement withoutinterfering with the working.

The disengager is designated h. The inward movement of the controller gplaces the said disengager h in its operative position, while the returnof the controller 9 to its outer inoperative position (shown in Fig. 2)places the disen gager also in an inoperative position. Herein forconvenience in construction the controller g is made as a support andcarrier for the disengager, which is in the form of a sliding pin fittedto a socket with which the controller is provided. A spring 7L, actingupon the said disengager, acts to hold the latter normally in arearwardly-retracted position in the said socket.

The going part,-which in the present case coacts with the disengager tooccasion the unshipping and stopping of the loom, is designated i. Itconsists of a slide-bar, which is supported by resting on a guide t",over which it is free to reciprocate, the said slide being connected toa lever i carrying a roll i bearing against a cam 11 on the cam-shaftThe said lever and connected slide-bar are moved in one direction by theaction of the said cam and may be returned in the other direction by thegravity of the lever, although such returnmay be effected with the aidof a spring i if desired. Ordinarily the slide 2' moves forward and backin the working of the loom without acting upon the disengager. When,however, the controller is actuated to place the disengager in itsoperative position, the slide t' in its forward movement encounters thedisengager and acts to move the same to effect the unshipping andstopping of the loom. WVhen forced forward by the slide t, thedisengager h presses against the shipperhandle a and bears the latterforward a distance sufficient to dislodge it from its holdin g-notch aat one end ofthe slot in the plate a. As soon as the shipper-handle isdislodged from the said notch the spring a throws the shipper-handleover to the inoperative position, thereby unshippin g the loom in awell-known manner.

For convenience in setting up the parts for operation and in makingcompensation for wear the slide 1' is made in two parts, as shown inFig. 1. One of the said parts is formed with opposite parallel flanges,as i i receiving between them the meeting end of the other of the parts,a slot 11 and bolt 11 being provided to enable one part to be secured tothe other with capacity for lengthwise adjustment.

In order that the controller g may be held inoperative position after ithas once been moved there by the action of the solenoid f and describedintermediate parts regardless of fluctuations in the electric currentand in the action of the solenoid, a latch is provided for the same.

The latch for the controller is shown at j. (See Figs. 1, 2, and 5.) Itis pivoted at j to a block made fast to the loom-frame ct, and occupiesa position at the forward side of the controller. The controller carriesa. pin g the said pin having a head working in a cavity in the frontside of the controller. A spring 9 seated in the said cavity behind thesaid head,'acts with a tendency to project the head toward the rear faceof the latch j. The said rear face is notched, (see Fig. 5,) and whenthe controller is caused to assume its operative position the notch ofthe latch receives/ IIO the head ofpin g, the controller therebybeinglocked mechanically for the time being in its said operative position.For the purpose of freeing the controller after the slide a has actedupon the disengager 7t to dislodge the shipper-handle, and therebyallowing the controller to assume again its inoperative position, thelatch is placed under the control of the shipper-handle, as follows: Thelatch has a cam-shaped forward face, as at j and when the shipper-handleis forced inward into its working position it presses against the saidcam-shaped face, (see Fig. 5,) thereby forcing the latch back slightlyinto position to allow the head of pin g to enter the notch of the rearface of the latch. When, however, the shipper-handle is disengaged andallowed to assume its inoperative position, as it passes outward fromthe latch. the latter is freed and allowed to move forward under theinfluence of a spring 7 The spring 7 surrounds the .stemof a boltextending through latchj and also through a plate j, applied to a fixedsupport. The-springis compressed between the said plate j and the headof the boltj The said forward movement of the latch removes it out ofthe reach of the head of pin g and thereby releases the controller, soas to permit it to move to its inoperative position under the influenceof weight 9 The switch by which the circuit is an tom aticallycontrolled is composed of contact plate or plates 7c, mounted upon asuitable fixed or stationary support 70 and contact plate or plates 70mounted upon a movable support 70 The movable support if is shownpivoted at 70 Fig. 6, to the bracket 70", which carries the two supports70 70. The movable support 7t is acted upon by a spring 76, which holdsthe same normally in the inoperative position in which it is shown inFigs. 6 and 7, the contact-plates 7c and 7.0 thereby being separated.The screw 70 projecting from the .movable support 70 enters a slot k inthe handle a bracket and by contact of the said screw with an end of thesaid slot the extent of the movement of the movable support 7,2 isdetermined.

For convenience in construction and in order to secure the requiredinsulation of the contact-plates 7c 70 the supports 70' and 70 arecomposed of fiber or the like material.

The free end of the movable support lt projects into the path ofmovement of shipper- Consequently when the shipperhandle is forcedinward into its operative position in shipping on the power it actsagainst the movable support k and moves the same to close the switch.WVhen, however, the shipper-handle is moved into inoperative positionfor the purpose of unshipping the driving power, the movable support isleft free and spring 766 is permitted to act to open the switch.

The wires connected with the respective contact-plates 7t 70 of theswitch are designated, respectively, (Z and c. The wiring is shown infull in the diagram, Fig. 8. The wire 61 is in electrical connectionwith the coil of the relay-magnet (Z and so is also the wire d,connecting with lower terminals 62 (Z for the warp-detectors. The wire dis in electrical connection with one pole of a battery or othergenerator Z, while the wire (1, connecting with the upper terminals dand d, is in electrical connection with the other pole of the saidgenerator.

The relay armature-lever is designated d. A wire (1 extends from thesame to the solenoidf, and from the latter a wire d extends to one poleof the generator. The con tact-piece with which the said armature-levercoacts is designated (1, and from the same a wire d extends to the otherpole of the generator.

In Fig. 8 the mechanical arrangements have been simplified somewhat forconvenience in illustration.

The relay-magnet is capable of being made sensitive and capable ofresponding to an electric current of great delicacy transmitted throughthe warp-detectors and terminals, whereas the solenoid is capable ofbeing made substantial and strong in proportion to the work that it isrequired to perform, and a current of any degree of electromotive forcerequisite for the proper action thereof may be furnished by means of therelay-circuit.

In some cases the lower guide-rods d d are made tubular to serve asconduits for compressed air, the latter being supplied thereto by meansof pipes m 'm, Figs. 1, 3, and 4. The said tubular guide-rods areperforated on their under sides, as at m, Figs. 3 and 9,

to direct jets of air against the contact-plates (Z d for the purpose ofblowing fluff and lint off the same. Thereby the said contact-plates arekept clean of any accumulation which might operate to prevent goodmetallic contact between the same and the warp-detectors when the latterdescend. The perforations are smallest adjacent to the ends of the saidtubular guide-rods, where the compressed air is supplied thereto, andgraduallyincrease in size in proceeding away from the said end.

In this manner in proportion as the pressure within the tubularguide-rods decreases in consequence of the escape of the compressed airthe increased size of the perforations facilitates the outflow of theair. Thereby the action of the jets of escaping air is renderedsubstantially uniform from end to end of each tubular guide-rod.

I claim as my invention- 1. In an electrical warp stop-motion for looms,in combination, the warp-detectors, guide-rodsholding the saidwarp-detectors in two ranks or lines and in whole or in partconstituting terminals of one polarity of a normally-broken electricalcircuit, and the downwardly-diverging oblique or inclined plates in linewith the ends of the respective ranks or lines of warp-detectors andconstituting terminals of the opposite polarity of the said circuit.

2. In an electrical warp stop-motion for looms, in combination, thewarp-detectors having the elongated slots, supporting guiderods passingthrough the said slots. and sustaining the warp-detectors in two rariksor lines, guide rods or strips for the other extremities of the saiddetectors, some or all of the said guide-rods constituting terminals ofone polarity of a normally-broken electrical circuit, and thedownwardly-diverging oblique or inclined plates in line with the ends ofthe respective ranks or lines of the warp detectors, the said platesconstituting terminals of the opposite polarity of the said circuit.

In an electrical Warp stopmotion for looms, in combination, thewarp-detectors having the elongated slots, supporting guide rods passingthrough the said slots and sustaining the warp-detectors in two ranks orlines, guide-rods at opposite sides of the lower extremities of the saidwarp-detectors, one or both pairsof the said guide-rods constitutingterminals of one polarity of a normally-broken electrical circuit, adivision-strip bet ween'the two ranks or lines, and thedownwardly-diverging oblique or inclined plates on opposite sides of thesaid division-strip in line with the ends of the respective ranks orlines of the warp-detectors, the said plates constituting terminals ofopposite polarity of the said circuit.

4. In an electrical warp stop-motion for looms, in combination, thewarp-detectors, the terminals cooperating with the warp-detectors, anelectromagnet in circuit with the said terminals, a controller normallyoccupying an inoperative position and adapted to be actuated by theexcitation of the said electromagnet, an independently-movabledisengager adapted to be placed in operative position by the'saidmovement of the controller, a going part of the loom to actuate the saiddisengager when the latter is in its operative position, and a shipperdevice to be operated from the said disengager.

5. In an electrical warp stop -motion for looms, in combination, thewarp-detectors, the terminals cooperating with the warp-derectors, anelectromagnet in circuit with the said terminals, the swingingcontroller normally occupying an inoperative position and adapted to beactuated by the excitation of the said electromagnet,the disengagermount ed to slide on the said controller and provided with a spring tohold it retracted, a going part of the loom to actuate the saiddisengager when placed in operative position by the movement of thecontroller, and a ship per device to be operated from the saiddisengager.

6. In an electrical warp stop-motion for looms, in combination, thewarp-detectors, the terminals cooperating with the Warp-detectors, asolenoid in circuit with the said terminals, the solenoid-core, thedisengager movably mounted and positively shifted into operativeposition by the movement of the said core, a going part to actuate thedisengager, and a shipper device to be operated from the saiddisengager.

7. In an electrical warp stop motion for looms, in combination, thewarp-detectors, the terminals cooperating with the warp-detectors, asolenoid mounted upon a fixed support and in circuit with the saidterminals, the solenoid-core, the controller mounted on the loom-frameand positively shifted into operative position by the movement of thesaid core, the disengager placed in operative position by the said shiftof the controller, a going part to actuate the disengager, and a shipperdevice to be operated from the said disengager.

8. In an electrical stop-motion for looms, in combination, the shipperdevice, a going part of the loom, an electromagnet, the disengager underoperative control of the said electromagnet and adapted to be placed bythe action thereof in position to be actuated by the going part andcaused to effect unshipping, and a latch controlled in its operation bythe shipper device and operating to hold the disengager in its operativeposition.

9. In an electrical stopmotion for looms, in combination, the shipperdevice, a going part of the loom, an electromagnet, the corn trollermoved by the said electromagnet, the disengager placed by the movementof the said controller in position to be actuated by the going part andthereby caused to effect unshipping, and a controller-latch governed inits operation by the shipper device.

10. In an electrical stop-motion for looms, in combination, the shipperdevice, a going part of the loom, an electromagnet, the controller movedby the said electromagnet, the disengager placed by the movement of thesaid controller in position to be actuated by the going part and therebycaused to effect unshipping, and thesprlng-actuated movablecontroller-latch normally occupying an inoperative position and movedinto position for engaging the controller by the shipper device when thelatter is set.

11. In an electrical stop-motion for looms, in combination, theshipper-handle, the movable controller mounted on an independentsupport, the disengager movably supported by the controller, areciprocating going part to engage said disengager when the latter is inoperative position, and an electromagnet to move the said controller toplace the same and the disengager in operative position.

12. In an electrical stop-motion for looms, in combination, theshipper-handle, the movable controller mounted on an independentsupport, the disengager movably supported by the controller, thereciprocating going part to engage said disenguger when the latter is inoperative position, an electromagnet to move said controller to placethe same and the disengager in operative position, and thecontroller-latch normally occupying an inoperative position and held inits operative position by the shipperhandle when the latter is set.

13. In an electrical stop-motion, in combination, detector devices todetect breakage of a thread being woven, a shipper-handle,electromechanical disengaging devices in circuit with said detectordevices and cooperating with the said shipper-handle to effect theunshipping thereof in case of such breakage, j

and a switch to control said circuit comprisingthe fixed support andcontacts carried? thereby, the movable support carrying other contactsand mounted in the path of the shipper-handle, to be operated to closethe switch by the movement of the shipper-handle in being set, and aspring operating upon the said movable support to open the switch andbreak the circuit when the shipper-handle is unshipped.

14. In an electrical warp stop-motion for looms, incombination,warp-detectors,- termi .nals of opposite polarity with whichsaid Warp- 16. In a loom, in combination, the leaserods, the harness,the stop-motion mechanism having the warp-detectors thereof locatedintermediate the lease-rods and the harness,

and the warp-rest located in advance of the warp-detectors at anintermediate height, whereby the rising warp-threads arepermitted'toelevate the corresponding portion of the warp-detectors ashort distance to prevent accumulation of fluff and lint.

17. In an electrical Warp stop-motion, in combination, thewarp-detectors, a tubular guide-rod thereforconstituting a terminal ofone polarity of a normally-broken electrical circuit, the said tubularguide-rod constituting also a conduit for compressed air and havingholes for the escape of the latter, and a contact-plate in line with theends of said warp-detectors and constituting a terminal of the oppositepolarity of the said circuit, the escaping air operating to remove fluffand lint from the surface of the said contact-plate.

18. In an electrical warp stop-motion, in combination, thewarp-detectors, a tubular guide-rod therefor constituting a terminal ofone polarity of a normally-broken electrical circuit, the said tubularguide-rod constituting also a conduit for compressed air and havingholes for the escape of the latter, and an oblique or inclinedcontact-plate in line with the ends of said warp-detectors andconstituting a terminal of the opposite polarity of the said circuit theescaping air operating to remove fluff and lint from the surface of thesaid oblique or'inclined contact-plate.

In testimony whereof I affix my'signature in presence of two witnesses.

HENRY I. I-IARRIMAN.

\Vi tn esses CHAS. F. RANDALL, LEPINE HALL RICE.

